docker-compose.yml

version: '2.2'
services:
  elasticsearch01:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.1.1
    container_name: whatevernameyouwant
# First one is self explanatory, the ES_JAVA_OPTS is the heap size, both values should be the same for some odd reason
    environment:
      - bootstrap.memory_lock=false
      - "ES_JAVA_OPTS=-Xms1g -Xmx1g"
    ulimits:
      memlock:
        soft: -1
        hard: -1

#Volume configuration, first one has the role of copying es6.yml into the ES config dir. The second one is path for the data storage location
    volumes:
      - ./es6.yml:/usr/share/elasticsearch/config/elasticsearch.yml
      - esdata01:/usr/share/elasticsearch/data

#ES6 port translation configuration docker_host:container
    ports:
      - 9200:9200
      - 9300:9300

#Persistent volume
volumes:
  esdata01:
    driver: local
#DO NOT FORGET to change rows 3, 18, 27 if you want to have something standard thats easy to undestand, optionaly row 5